not me, but a mate of mine went to the car show at earls Court and then to compensate his then gf for half a day lusting after the body shapes of the sleek italian models (he saw some cars too) he took her in to Harrods. While there he went for a slash and found himself side by side with the then England netminder David Seaman. Who on catching my mates eye, delivered the pearl of wisdom

David Coverdale, met him at one of his gigs and bought him a pint afterwards..
Lemmy from Motorhead, he pee'd on my shoes.
David Lee Roth at Donnigton "back in the day" He had a bottle of vodka in his hand and two girls on his left arm..
Jason Mraz at an intimate gig in a Birmingham Library sing/song/signing pre on of his gigs.. I'v met him lots of times, he's a really nice bloke..
Damiano Cunego, Stefano Garzelli et all pee'ing on the side of the road at the Tour of Lombardia..